Should not be a problem.
Give your PC a static IP Address for LAN 2 if you want to use that, like 192.168.43.111, subnet 255.255.255.0.
If you have a static IP Addres 192.168.42.111 and subnet 255.255.0.0 then it should work if you select in the Manager under Preferences the IP address 192.168.43.1.